南海北部滑坡海啸数值模拟与危险性分析-海洋预报

南海北部滑坡海啸数值模拟与危险性分析

单位：国家海洋环境预报中心(自然资源部海啸预警中心)自然资源部海洋灾害预报技术研究重点实验室, 北京 100081

分类号：P731.25

出版年·卷·期（页码）：2020·37·第六期（9-19）

摘要：

选取南海北部白云凹陷区域作为潜在的滑坡海啸源进行研究。参考前人对白云凹陷区域地形及滑坡体的研究成果，给出滑坡海啸源参数；使用Geowave模式对滑坡海啸进行数值模拟，并根据模拟结果对海啸的到达时间、最大波高分布以及波形特征等要素进行分析。结果表明：白云凹陷区域发生滑坡海啸将会在南海深水区域造成6 m以上的最大海啸波幅，在近岸区域造成0.3~3 m不等的最大海啸波幅，对南海区域将造成较大的灾害性影响。

We select the source parameters and simulate the landslide tsunami using Geowave model, and then analyze the arrival time of tsunami, distribution of maximum tsunami wave height and the waveform features. The results show that the landslide tsunami in the Baiyun depression area will cause tsunamis with a maximum wave amplitude over 6 m in the deep water area and 0.3~3 m in the nearshore area, which has a disastrous impact on the South China Sea region.

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